Transmission Conductor Plate Failure
Major Issue - Address Promptly
About This Issue
The NAG1 (722.6) transmission conductor plate contains electronics that control shift solenoids. These can fail due to heat and age, causing transmission issues.
Symptoms to Watch For
- Erratic shifting
- Limp mode
- Transmission fault codes
- Delayed engagement
- Stuck in gear
Solution
Replace the conductor plate and transmission filter. Requires dropping the transmission pan and valve body work. Use genuine Mercedes part.
Prevention
Regular transmission fluid changes every 40,000 miles. Avoid overheating the transmission.
Quick Info
- Severity:
- major
- Affected Years:
- 2002-2018
- System:
- Drivetrain
Related Procedures
Related Fault Codes
Diagnostic trouble codes this issue commonly triggers:
- P0700Transmission Control System (MIL Request)
- P0701Transmission control system range/performance
- P0702Transmission control system electrical
- P0716Transmission / Drivetrain Fault
- P0717Transmission / Drivetrain Fault
- P0718Transmission / Drivetrain Fault
- P0720Output speed sensor circuit
- P0721Transmission / Drivetrain Fault
- P0722Transmission / Drivetrain Fault
- P0729Gear 6 incorrect ratio
- P0730Incorrect gear ratio
- P0731Gear 1 incorrect ratio